"Nothing has changed with Ray," Harbaugh said on a conference call with reporters.
According to the Baltimore Sun, Lewis worked on Wednesday and could be activated off the injured reserve with a designation to return against the Giants. Lewis, who has been sidelined with a torn right triceps, has been practicing for the past couple of weeks.
"I haven't thought about that," Harbaugh said of Lewis playing this weekend. "I'm just thinking about getting our team ready for the Giants right now and being the best we can be. Obviously, Ray is preparing, he's been preparing for the last couple weeks. We'll just have to see."
One Ray who will definitely be on the field is running back Ray Rice. The former Rutgers standout said he sees the defending champions when he looks at the Giants, and not a team that just got waxed 34-0 by the Falcons.
"First off, you see a very physical bunch," Rice said. "Obviously, they have premier pass-rushers, they have smart linebackers and they have physical safeties. I mean, when that team puts it all together, there's a reason as to why they're Super Bowl champs. You don't just become the Super Bowl champs by surprise or by accident. That's a really good football team over there."
Rice's carries have been a topic surrounding the Ravens, who recently fired offensive coordinator Cam Cameron and replaced him with former Colts coach Jim Caldwell. Rice only had 12 carries for 38 yards and three catches in a 34-17 loss to Denver last week under Caldwell as offensive coordinator.
"Looking at how we played, I know I get my touches when we're executing on third down," Rice said. "Obviously last week, we played against a great defense. I try to make the best of my touches, but we didn't execute well. That's something that we have to do better."
While the Giants need to win out to make the playoffs, the Ravens have already clinched a playoff spot. But Baltimore (9-5) is looking to halt a three-game skid.
"There's definitely a lot of urgency," Rice said. "We lost three in a row. That's the most I've lost since I've been a Raven. Obviously, there's got to be urgency for us to go out there and play a great game of football."